Pylorus dilator with multi-balloon structure

Abstract

The invention relates to the field of medical instruments, in particular to a pylorus dilator with a multi-balloon structure, which comprises a connecting tube, a first balloon, a storage box, a second balloon and a guide wire, the storage box is arranged on one side of the connecting tube, the first balloon is fixedly connected to the outer wall of one end of the connecting tube, and the second balloon is fixedly connected to the outer wall of the other end of the connecting tube. A second balloon is fixedly connected to the outer wall of the end, away from the first balloon, of the connecting tube, and a guide wire tube is fixedly connected to the inner wall of the connecting tube, so that the second balloon conducts secondary limiting on the pylorus of a patient, the dilator is fixed through the first balloon, and then the dilation treatment effect on the pylorus is achieved through the second balloon; through the two balloons, the situation that the front ends of the balloons puncture the duodenum after the dilator slips can be prevented, the phenomenon that the balloons slips in the treatment process can also be avoided, the first balloon and the second balloon can be inflated through the T-shaped tube, an additional inflation tube does not need to be used, the first balloon and the second balloon can be deflated at the same time when deflated at the same time, and the operation is simple and convenient. The exhaust efficiency is accelerated.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and specifically relates to a pyloric dilator with a multi-balloon structure. Background Art

[0002] A pyloric balloon dilator is a medical device used to treat pyloric stenosis. Through endoscopic operation, it uses balloon dilation technology to widen the narrowed pyloric area. Pyloric stenosis is a disease in which the pylorus becomes narrowed, making it difficult for food to pass from the stomach into the small intestine. Using a pyloric balloon dilator can relieve this stenosis and improve the digestive system function of patients. An ordinary endoscopic balloon dilator has only one guide wire channel and one gas channel. There is only one balloon. When performing stenosis dilation treatment on the esophagus, intestine, etc., since the esophagus and intestine are tubular and the balloon becomes columnar after inflation, the balloon is not easily dislocated during dilation. However, for pyloric stenosis, since the upper part of the pylorus is the gastric antrum and the lower part is the duodenum, forming a dumbbell-shaped cavity, when using an ordinary balloon for dilation, the balloon is prone to slide up and down due to gas pressure, resulting in the balloon slipping during dilation and causing difficulties in dilation treatment. Therefore, it is necessary to propose a pyloric dilator with a multi-balloon structure. Summary of the Invention

[0003] In view of the problems in the prior art, the present invention provides a pyloric dilator with a multi-balloon structure.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a pyloric dilator with a multi-balloon structure, including a connecting tube, a first balloon, a storage box, a second balloon, and a guide wire. A storage box is provided on one side of the connecting tube. One end outer wall of the connecting tube is fixedly connected with a first balloon. The outer wall of the connecting tube is symmetrically fixedly connected with second balloons relative to the first balloon. A guide wire tube is fixedly connected to the inner wall of the connecting tube. One end of the guide wire tube extends outside the connecting tube and is fixedly connected with a guide wire inlet and outlet. A guide wire is provided in the inner wall of the guide wire tube, and one end of the guide wire extends into the guide wire inlet and outlet. One end inner wall of the first balloon is fixedly connected with a first ventilation tube. One end inner walls of the two second balloons are jointly fixedly connected with a second ventilation tube. One ends of the first ventilation tube and the second ventilation tube both penetrate and extend into the storage box and are jointly fixedly connected with a T-shaped tube. One end of the T-shaped tube penetrates and extends outside the storage box and is fixedly connected with a gas channel valve.

[0005] Specifically, at the positions of the first ventilation pipe and the second ventilation pipe on the inner wall of the storage box, a first tapered block and a second tapered block are respectively slidably connected, and the first tapered block and the second tapered block are respectively abutted against the corresponding first ventilation pipe and second ventilation pipe. On both inner walls of the storage box, at positions corresponding to the first ventilation pipe and the second ventilation pipe, tapered top blocks are respectively fixedly connected, and the two tapered top blocks are respectively abutted against the corresponding first ventilation pipe and second ventilation pipe.

[0006] Specifically, a connecting rod is rotatably connected at the middle position between the first tapered block and the second tapered block on the inner wall of the storage box. A gear is fixedly connected to the outer wall of the connecting rod. On one side of the gear, racks are respectively fixedly connected to the first tapered block and the second tapered block, and the racks are meshed with the gear.

[0007] Specifically, a fixed block is fixedly connected to one inner wall of the storage box at a position corresponding to the gear. A groove is provided on one outer wall of the fixed block and a limiting block is slidably connected therein, and one end of the limiting block abuts against the gear.

[0008] Specifically, a spring is fixedly connected to the outer wall of one end of the limiting block located in the groove, and the other end of the spring is fixedly connected to the fixed block.

[0009] Specifically, one end of the connecting rod passes through and extends outside the storage box through a bearing and is fixedly connected to a handle. Through grooves are respectively formed in both inner walls of the storage box at positions corresponding to the first tapered block and the second tapered block, and one end of each of the first tapered block and the second tapered block extends into the corresponding through groove.

[0010] Specifically, the first balloon is arranged in a cylindrical shape, the diameter of the first balloon is 20 mm and the rated pressure is 5.5 atm, the length of the first balloon is 35 mm. The two second balloons are arranged in a cylindrical shape, the diameter of the two second balloons is 20 mm and the rated pressure is 5.5 atm, and the length of the two second balloons is 20 mm.

[0011] Specifically, after the first balloon is inflated, the diameter is less than 30 mm and the length is 40 mm. The diameter of the two second balloons after inflation is 30 mm - 50 mm. The diameters of the first balloon and the second balloons when not inflated are both less than 8.8 mm.

[0012] The beneficial effects of the present invention: (1) For a pyloric dilator with a multi-balloon structure according to the present invention, when the gas channel valve is opened, the first air pipe and the second air pipe are ventilated through the T-shaped pipe. The second air pipe inflates the second balloon, and the second balloon plays a role in fixing the position of the patient. The dilator is fixed by the first balloon, and the first balloon plays a role in dilating the pylorus. The two balloons prevent the front end of the balloon from stabbing the duodenum after the dilator slips, and also avoid the phenomenon of balloon slippage during the treatment process.

[0013] (2) For a pyloric dilator with a multi-balloon structure according to the present invention, the connecting rod and the gear are rotated by the handle. The gear drives the rack, the first conical block, and the second conical block to move. When the first conical block and the conical top block squeeze the first air pipe, the second air pipe inflates the second balloon. When the second conical block and the conical top block squeeze the second air pipe, the first air pipe inflates the first balloon. When exhausting, the first air pipe and the second air pipe simultaneously discharge the gas in the first balloon and the second balloon. The first balloon and the second balloon can be inflated separately through the T-shaped pipe without using an additional air filling pipe. At the same time, when exhausting, the first balloon and the second balloon can be exhausted simultaneously, accelerating the exhaust efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the drawings and embodiments.

[0015] Figure 1 It is a front view structural schematic diagram of a pyloric dilator with a multi-balloon structure provided by the present invention; Figure 2 It is an expanded state structural schematic diagram of a pyloric dilator with a multi-balloon structure provided by the present invention; Figure 3 It is an expanded state partial cross-sectional structural schematic diagram of a pyloric dilator with a multi-balloon structure provided by the present invention; Figure 4 It is a partial cross-sectional structural schematic diagram of a pyloric dilator with a multi-balloon structure provided by the present invention; Figure 5 It is a cross-sectional structural schematic diagram of a storage box of a pyloric dilator with a multi-balloon structure provided by the present invention.

[0016] In the figure: 1. connecting pipe; 2. first balloon; 3. second balloon; 4. guide wire; 5. guide wire tube; 6. guide wire inlet and outlet; 7. first air pipe; 8. second air pipe; 9. storage box; 10. T-shaped pipe; 11. gas channel valve; 12. first conical block; 13. second conical block; 14. conical top block; 15. connecting rod; 16. gear; 17. rack; 18. fixed block; 19. limiting block; 20. spring; 21. handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0018] As Figures 1 - 5 shown, a pyloric dilator with a multi-balloon structure according to the present invention includes a connecting tube 1, a first balloon 2, a storage box 9, a second balloon 3 and a guide wire 4. A storage box 9 is provided on one side of the connecting tube 1. One end outer wall of the connecting tube 1 is fixedly connected with a first balloon 2. Second balloons 3 are fixedly connected to the outer wall of the connecting tube 1 symmetrically with respect to the first balloon 2. A guide wire tube 5 is fixedly connected to the inner wall of the connecting tube 1. One end of the guide wire tube 5 extends outside the connecting tube 1 and is fixedly connected with a guide wire inlet / outlet 6; A guide wire 4 is provided in the inner wall of the guide wire tube 5, and one end of the guide wire 4 extends into the guide wire inlet / outlet 6. One end inner wall of the first balloon 2 is fixedly connected with a first ventilation tube 7. One end inner walls of the two second balloons 3 are jointly fixedly connected with a second ventilation tube 8. One ends of the first ventilation tube 7 and the second ventilation tube 8 both penetrate and extend into the storage box 9 and are jointly fixedly connected with a T-shaped tube 10. One end of the T-shaped tube 10 penetrates and extends outside the storage box 9 and is fixedly connected with a gas channel valve 11.

[0019] Among them, in the storage box 9, a first tapered block 12 and a second tapered block 13 are respectively slidably connected to the inner wall of the storage box 9 at the positions of the first ventilation tube 7 and the second ventilation tube 8, and the first tapered block 12 and the second tapered block 13 respectively abut against the corresponding first ventilation tube 7 and second ventilation tube 8. Conical top blocks 14 are respectively fixedly connected to the two inner walls of the storage box 9 at the positions of the first ventilation tube 7 and the second ventilation tube 8, and the two conical top blocks 14 respectively abut against the corresponding first ventilation tube 7 and second ventilation tube 8.

[0020] Among them, a connecting rod 15 is rotatably connected to the middle position of the inner wall of the storage box 9 between the first tapered block 12 and the second tapered block 13. A gear 16 is fixedly connected to the outer wall of the connecting rod 15. Rack bars 17 are respectively fixedly connected to one side of the first tapered block 12 and the second tapered block 13 where the gear 16 is located, and the rack bars 17 are meshed with the gear 16.

[0021] Among them, a fixing block 18 is fixedly connected to one inner wall of the storage box 9 at the position of the gear 16. A groove is provided on one outer wall of the fixing block 18 and a limiting block 19 is slidably connected thereto, and one end of the limiting block 19 abuts against the gear 16.

[0022] Among them, a spring 20 is fixedly connected to one end outer wall of the limiting block 19 located in the groove, and the other end of the spring 20 is fixedly connected to the fixing block 18.

[0023] One end of the connecting rod 15 passes through the bearing and extends outside the storage box 9 and is fixedly connected with a handle 21. Through slots are formed in the inner walls at both ends of the storage box 9 corresponding to the positions of the first conical block 12 and the second conical block 13, and one ends of the first conical block 12 and the second conical block 13 extend into the corresponding through slots.

[0024] Among them, the first balloon 2 is arranged in a cylindrical shape, the diameter of the first balloon 2 is 20 mm and the rated pressure is 5.5 atm, the length of the first balloon 2 is 35 mm, the two second balloons 3 are arranged in a cylindrical shape, the diameter of the two second balloons 3 is 20 mm and the rated pressure is 5.5 atm, and the length of the two second balloons 3 is 20 mm.

[0025] Among them, the diameter of the first balloon 2 after inflation is less than 30 mm and the length is 40 mm, the diameter of the two second balloons 3 after inflation is 30 mm - 50 mm, and the diameters of the first balloon 2 and the second balloons 3 when not inflated are both less than 8.8 mm.

[0026] During use, the guide wire 4 is inserted into the guide wire tube 5 through the guide wire inlet and outlet 6. Under the guidance of the endoscope and the guide wire 4, the dilator is inserted into the pylorus of the patient. The first balloon 2 and the second balloons 3 are located inside the pylorus of the patient. The handle 21 drives the connecting rod 15 and the gear 16 to rotate. The gear 16 drives the first conical block 12 and the second conical block 13 to move in opposite directions through the rack 17. The first conical block 12 gradually moves away from the first air pipe 7, and the second conical block 13 and the conical top block 14 gradually squeeze the second air pipe 8. The gas channel valve 11 is opened, and the first balloon 2 is inflated through the first air pipe 7. The first balloon 2 gradually expands. An appropriate amount of gas is injected into the first balloon 2. The expanded first balloon 2 is fixed at the pylorus. The handle 21 drives the connecting rod 15 and the gear 16 to rotate. The gear 16 drives the first conical block 12 and the second conical block 13 to move in the reverse direction. The second conical block 13 gradually moves away from the second air pipe 8, and the first conical block 12 and the conical top block 14 gradually squeeze the first air pipe 7. The second balloons 3 are inflated through the second air pipe 8. Gas with an atmospheric pressure of 3 - 4 kPa is injected into the second balloons 3 to fully expand the second balloons 3, playing a role in pylorus dilation treatment. After using the dilator for limiting, the handle 21 drives the connecting rod 15 and the gear 16 to rotate, and the first conical block 12 and the second conical block 13 are moved back to their original positions. After the gear 16 stops rotating, the spring 20 pushes the limiting block 19 to abut against the gear 16 to limit the gear 16. After use, the gas channel valve 11 is opened, and the gas inside the first balloon 2 and the second balloons 3 is discharged through the first air pipe 7 and the second air pipe 8. The first balloon 2 and the second balloons 3 contract, and then the dilator can be pulled out through the guide wire 4.

[0027] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pyloric dilator with a multi-balloon structure, comprising a connecting tube (1), a first balloon (2), a storage box (9), a second balloon (3), and a guide wire (4). A storage box (9) is provided on one side of the connecting tube (1), and it is characterized in that, One end of the outer wall of the connecting pipe (1) is fixedly connected with a first balloon (2). The outer wall of the connecting pipe (1) is symmetrically fixedly connected with second balloons (3) relative to the first balloon (2). The inner wall of the connecting pipe (1) is fixedly connected with a guide wire tube (5). One end of the guide wire tube (5) extends outside the connecting pipe (1) and is fixedly connected with a guide wire inlet / outlet (6). A guide wire (4) is arranged inside the guide wire tube (5), and one end of the guide wire (4) extends into the guide wire inlet / outlet (6). One end of the inner wall of the first balloon (2) is fixedly connected with a first ventilation pipe (7). One end of the inner walls of the two second balloons (3) is jointly fixedly connected with a second ventilation pipe (8). One ends of the first ventilation pipe (7) and the second ventilation pipe (8) both penetrate and extend into the storage box (9) and are jointly fixedly connected with a T-shaped pipe (10). One end of the T-shaped pipe (10) penetrates and extends outside the storage box (9) and is fixedly connected with a gas channel valve (11).

2. The pyloric dilator with a multi-balloon structure according to claim 1, characterized in that: Inside the storage box (9), at the positions of the first ventilation pipe (7) and the second ventilation pipe (8), the inner wall of the storage box (9) is respectively slidably connected with a first tapered block (12) and a second tapered block (13), and the first tapered block (12) and the second tapered block (13) respectively abut against the corresponding first ventilation pipe (7) and second ventilation pipe (8). On both sides of the inner wall of the storage box (9), at the positions of the first ventilation pipe (7) and the second ventilation pipe (8), tapered top blocks (14) are respectively fixedly connected, and the two tapered top blocks (14) respectively abut against the corresponding first ventilation pipe (7) and second ventilation pipe (8).

3. The pyloric dilator with a multi-balloon structure according to claim 2, characterized in that: A connecting rod (15) is rotatably connected at the middle position between the first tapered block (12) and the second tapered block (13) on the inner wall of the storage box (9). A gear (16) is fixedly connected to the outer wall of the connecting rod (15). On one side of the gear (16), racks (17) are respectively fixedly connected to the first tapered block (12) and the second tapered block (13), and the racks (17) are meshed with the gear (16).

4. A pyloric dilator with a multi-balloon structure according to claim 3, characterized in that: A fixed block (18) is fixedly connected to one side of the inner wall of the storage box (9) at the position of the gear (16). A groove is provided on the outer wall of one side of the fixed block (18) and is slidably connected with a limit block (19), and one end of the limit block (19) abuts against the gear (16).

5. A pyloric dilator with a multi-balloon structure according to claim 4, characterized in that: One end of the outer wall of the limit block (19) located in the groove is fixedly connected with a spring (20), and the other end of the spring (20) is fixedly connected to the fixed block (18).

6. A pyloric dilator with a multi-balloon structure according to claim 3, characterized in that: One end of the connecting rod (15) penetrates and extends outside the storage box (9) through a bearing and is fixedly connected with a handle (21). Through grooves are respectively opened at both ends of the inner wall of the storage box (9) at the positions of the first tapered block (12) and the second tapered block (13). One ends of the first tapered block (12) and the second tapered block (13) both extend into the corresponding through grooves.

7. A pyloric dilator with a multi-balloon structure according to claim 1, characterized in that: The first balloon (2) is arranged in a cylindrical shape. The diameter of the first balloon (2) is 20 mm and the rated pressure is 5.5 atm. The length of the first balloon (2) is 35 mm. The two second balloons (3) are arranged in a cylindrical shape. The diameter of the two second balloons (3) is 20 mm and the rated pressure is 5.5 atm. The length of the two second balloons (3) is 20 mm.

8. A pyloric dilator with a multi-balloon structure according to claim 1, characterized in that: After inflation, the diameter of the first balloon (2) is less than 30 mm and the length is 40 mm. After inflation, the diameter of the two second balloons (3) is 30 mm to 50 mm. When not inflated, the diameters of the first balloon (2) and the second balloons (3) are both less than 8.8 mm.

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